Water Treatment FAQ

Tap water is delivered to each house through a series of pipes. These pipes as well as the ones inside our homes are often not replaced or cleaned for long periods of time. This allows a buildup of contaminants like rust to pollute our household water supply.

Unpurified water may contain a range of hazardous substances that can harm humans if consumed or bathed in. Healthy water should: be clear and be free of abnormal odors, particles or rust; be free of substances that are carcinogenic, teratogenic, mutagenic or pathogenic; be free of organic contaminants including pesticides, chemical fertilizers, industrial dye, detergents and disinfectants; be free of heavy metals including lead, arsenic, mercury, cadmium and chromium; contain beneficial elements including minerals.

A household water filter can filter out silt, sand, colloids and other impurities in tap water, and effectively reduce residual chlorine, bacteria, toxins, heavy metals and other substances.

To improve the water quality through filtering and purification, a contaminant-targeted filtering technology should be adopted. Multi-stage filters are effective at removing contaminants of specified sizes. Generally, the standard configuration is four stages, with pre-filtering to remove larger particles and post-filtering to remove harmful substances and improve the taste of the water.

Watts is a recognized water purification expert in the US, offering a complete series of water purification solutions. In addition, Watts is a single-source provider of water quality monitoring, flow control and temperature control solutions.  Watts technologies include Oneflow anti-scale systems and SmartStream UV treatments for sterilizing harmful microorganisms. Treatment systems from Watts include: Foodservice business machines imported from the US, pre-filters imported from Germany, central water filtration systems  using imported filtering media, water softeners and high-flow reverse osmosis (RO) systems and ultrafiltration units. In addition to these customized products, Watts also offers whole-house water purification solutions for basic, standard and premium treatments to meet the personalized needs of customers.

Our quality system is established in strict accordance with the requirements of the ISO9001 national quality standard and the ISO14001 international environmental standard to meet the domestic drinking water quality criteria stated in “Evaluation Criteria for Health Safety and Functions of Domestic Drinking Water Quality Processor - General or Reverse Osmosis Water Quality Processor” (2001).

The reverse osmosis membrane captures extremely fine particles in the water.
The system periodically flushes these particles from the membrane, directing them to the drain. This extends the lifespan of the RO membrane.  Too little waste water discharge will easily cause the blockage of RO membrane, shortening the service life of membrane.

These bubbles form when air dissolves in water and passes through the filter element. They will volatize on their own. Bubbles will stop forming after the purifier has been used for some time. These bubbles are harmless to the human body, so you can feel assured it is safe to use the water purifier.

There are two main categories of Watts water purifiers. Reverse osmosis under-counter drinking water systems can remove minerals from water, preventing scale.
Water softeners reduce scale by replacing mineral ions with sodium. Watts Oneflow filtering media imported from the US offers a salt-free anti-scale solution, which requires no chemicals, salt, discharge water or electricity to reduce scale formation. Please contact local agent or call the 400 hot-line for product details.

Watts under-cabinet systems do not have a two-outlet configuration, but if the customer asks for it, the installer can refit the water supply during installation to provide two outlets. If a machine is refitted, only a relatively frequent replacement of the first two levels of filter elements can guarantee a safe quality of outlet water.

The replacement period depends on the volume of water passing through the filter over time. The amount of time between filter changes is reduced with higher water consumption. The recommended filter replacement cycle in the product instructions is the shortest use period estimated according to typical household usage.

All systems with smart LED displays purchased from Watts have a reminder function for filter element service life. This reminder is based on installation time and the user’s actual water consumption. For an ordinary machine without a digital display, a reduction in flow indicates that the filter needs to be replaced. For an activated carbon filter element, replacement is indicated with a change in the taste of the water.  For an ultrafiltration or reverse osmosis filter element, the water outlet flow will decrease when the filter needs to be replaced. If a filter element is not replaced for a long time, the interception effect would decrease. Meanwhile, the filter element can become a breeding ground for bacteria, thus affecting the outlet water quality.

The recommended replacement cycle for each type of filter is different. It is determined by the filter properties and the volume of water flowing through the system. Generally, timely replacement can effectively prolong a filter’s service life.

The filter element consumables corresponding to various models of ultra-filter and reverse osmosis machine are different, and are generally 400 - 800 RMB/year.

Please directly contact local distributor or call Watts at 400 hot-line (400-070-8760), and Watts will arrange a specially-assigned person to provide in home replacement and maintenance services.

Watts pre-filter is imported from Germany. From material selection and application to structural design, we pursue the best quality.
The Watts pre-filter has a 90-μm filtration size, with exclusive backwashing technology that ensures outlet water quality to prolong service life. Meanwhile, both pre-filters can be loaded with pressure reducing valve or automatic flushing controller for flexible upgrade.

Generally, it can be used for 5-10 years or even permanently without maintenance. For the core filter screen, in addition to routine flushing and pollution discharge, if you notice a significant decrease in outlet water volume, you can dismantle the filter to remove the filter screen. You can flush the screen under the tap or scrub it using a toothbrush or other tools, and then reinstall it for continued use.

Please refer to the table below for selection of product model:

The household water filter is easy to install, and there is no need to alter the current domestic water and electricity lines. You just need to drill holes or fix the water purifier on a selected location, connect the water purifier to tap water pipeline, open the main inlet ball valve after installation to adjust the household water filter and confirm there is no water leakage. For a renovated house, we generally recommend selecting Watts under-counter drinking water systems or a small water softener; for an un-renovated house, the whole-house water purification system is recommended according to customers' needs and installation conditions.

Watts central water purifier adopts unique formula of filtering media: high-performance granular activated carbon/KDF alloy/exclusive high-adsorption Micro-Z zeolite of Watts. The filtering media are generally replaced every 1-2 year(s) depending on raw water quality and actual water use. A user can determine whether the filtering media need to be replaced according to outlet water quality, residual chlorine/COD and other indexes. It is recommended that a water sample be sent to a distributor for testing, or the homeowner can use a water quality test kit. The replacement method involves changing the fiberglass barrel. Please contact your local distributor for a replacement or call the Watts 400 hotline to request a replacement.

The resin in a Watts water softener should be replaced regularly, generally every 3-5 years. The time for replacement depends on raw water quality, regeneration times and other conditions. A good quality of regenerated soft water salt can also prolong the service life of resin. Please directly contact local distributor for replacement or call Watts at 400 hot line to apply for replacement.

In national 3C (mandatory product certification system) certification directory, there are a total of 18 types of "household and similar equipment" as stipulated in Item 7. It is explicitly stipulated in Item 17 that "liquid heater and cold-hot water dispenser" are within the scope of certification. No Watts water-purifying product has a liquid heater, so these products are not covered by 3C certification.